The American house carpenter. A treatise on the art of building. Comprising styles of architecture, strength of materials, and the theory and practice of the construction of floors, framed girders, roof trusses, rolled-iron beams, tubular-iron girders, cast-iron girders, stairs, doors, windows, mouldings, and cornices; together with a compend of mathematics. A manual for the practical use of architects, carpenters, stair-builders, and others (1880)
Hatfield, R. G. (Robert Griffith), 1815-1879, Hatfield, O. P., ed · New York, J. Wiley & sons · leaf 590
Fig. 345. A sector is any part of a circle bounded by an arc andtwo radii, drawn to its extremities {B, Fig. 344). A quadrant, or quarter of a circle, is a sector having aquarter of the circumference for its arc [C, Fig. 344). A tangent is a right line which, in passing a curve,touches, without…
Carpentry · Architecture · Building
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